Mentoring

Free growth mentoring for startup founders

Every week I keep 2 hours free for 30-minute mentoring sessions with founders and marketers. You bring one growth problem, we dig into it properly, and you leave with something you can actually do next.

I mentor at Unicorn Factory Lisboa, for Partech's portfolio startups and on GrowthMentor, where I'm on 5.0 from 17 reviews (I promise I didn't write any of them myself!).

Tristan Gillen mentoring two startup founders

Where I mentor

Unicorn Factory LisboaPartechGrowthMentor

What we can cover

These are the four topics that come up again and again. Pick one, or bring something else entirely.

GTM strategy

Who you should be selling to, what you say to them and how you get in front of them first.

Acquisition channel recommendations

Which channels are worth testing for your startup right now, which to park, and how to tell the difference without burning a quarter's budget.

Resourcing and building your growth team

When to hire full time, when to use freelancers or an agency, and what to keep in house.

Using AI in your go-to-market

Where AI genuinely saves your team time in GTM today, and where it doesn't (yet). This is the bit I'm spending most of my time on while building GREX.

How a session works

  1. Book a slot. Pick a time that suits you, either here or on GrowthMentor.
  2. Send me the problem. A couple of lines on what you're stuck on, plus any numbers. It means we skip the warm-up.
  3. 30 minutes, properly focused. We work through it together and you leave with a next step.
  4. Come back whenever. Tell me what happened when you tested it. I love hearing how it went, good or bad!

Where mentoring stops

A 30-minute session is great for one sharp problem. If you need someone to own growth with you every month, that's a different job, and it's what I do as a fractional CMO.

Running a programme or a VC portfolio and want a session for a whole cohort? Have a look at my GTM workshops.

What people say

Unicorn Factory Lisboa
Tristan has led our Traction & Growth session in Unicorn Factory Lisboa's Incubation Program more than once, and every time the founders came out with practical tactics they could put to work straight away. I'd recommend Tristan to any accelerator, incubator or founder team looking for hands-on growth expertise.
Gonçalo Miguel Incubation Portfolio
GrowthMentor
I feel very confident in testing, rolling out, and scaling affiliate channels with Tristan's advice.
Clemens Deimann Review on GrowthMentor, rated 5.0 from 17 reviews

Mentoring FAQs

Is the mentoring really free?

Yes! I keep 2 hours a week for free 30-minute sessions with founders and marketers. No catch, and no obligation to work together afterwards.

Who are the sessions for?

Startup founders and marketers working on a specific growth problem, from pre-seed through to scale-up. I mentor through Unicorn Factory Lisboa, for Partech's portfolio startups and on GrowthMentor, but you don't need to be part of any programme to book.

What should I bring to a session?

One problem, as specific as you can make it, plus the numbers behind it if you have them. 'Which channel should we test next with a £5k budget?' gets you much further in 30 minutes than 'how do we grow?'.

Can I book more than one session?

Of course, especially once you've tested something and want to talk through what happened. If you find you want ongoing, hands-on help, that's what my fractional CMO work is for.

Got a growth problem on your mind?

Grab a free 30-minute slot and bring it with you.

Book a free session

And that's me!

Let's have a coffee?

Book a call